yes its a Lg drive.I know what the power lead is for , but it came with a lead with USB on one end, and the other end is very much smaller and i have no such connection on my computer. Its also come with a lead with a square connection on one end and a different small connection on the other end .No instructions. I guess its supposed to be foolproof , Very confusing..

it sounds as if you have a lead for a firewire card square type connection one end and a smaller square type connector on the other.The other lead you have is a lead to connect through a usb connection on your computer.Have a look here click on usb cables and thenfirewire cables to see if they are what you haveclick here